Dishes were not getting clean; i noticed that the middle spray arm was not working; but also other spray arms appeared to have residue in the irrigation holes Margaret O. • University Heights, OH • November 08, 2014 My Repair & Advice I did an internet search - found your site explaining how to fix. I purchased the upper, middle, and lower spray arms - It took about 15 minutes total. Very very easy. No more dirty dishes! Was this review helpful to you?